* {
    margin: 0;
    padding: 0;
}

/*iframe {*/
    /*display: none;*/
    /*opacity: 0;*/
/*}*/

body {
    height: 100vh;
    width: 100vw;
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Hiragino Sans GB, "PingFang SC", 'Microsoft YaHei', sans-serif;

}

input[type="text"],#btn1,#btn2{
    display: block;
    border:none;
    -webkit-appearance:none;
    -moz-appearance: none;
    outline:0;
    text-decoration:none;
}
input[type="text"]:focus{
    border:1px solid black;
}

